#181381#181381

#181381 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 30.0% C 0.171 H 271.3°. Best body text is #FFFFFF at 14.49:1 contrast (WCAG AA passes).

Color values

HEX	#181381
RGB	rgb(24, 19, 129)
HSL	hsl(243, 74%, 29%)
HSV	hsv(243, 85%, 51%)
CMYK	cmyk(81.4%, 85.3%, 0%, 49.4%)
CIE-LAB	lab(16.72, 40.79, -59.06)
CIE-LCH	lch(16.72, 71.77, 304.63°)
OKLab	oklab(30% 0.004 -0.1709)
OKLCH	oklch(30% 0.171 271.3)
XYZ	xyz(4.5707, 2.2444, 20.9569)
Luminance	0.0225 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#181381 #7C8113

analogous

#134581 #181381 #4F1381

triadic

#181381 #811813 #138118

tetradic

#181381 #811345 #7C8113 #13814F

square

#181381 #811345 #7C8113 #13814F

split-complementary

#181381 #814F13 #458113

monochromatic

#05041B #0E0B4C #181381 #221BB6 #362EE0

Accessibility & contrast

On white

14.49

#181381 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#181381 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #181381

14.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##181381	#FFFFFF	#000000	##FFFFFF
##181381	1.00	14.49	1.45	14.49
#FFFFFF	14.49	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F84

Deuteranopia (green-blind)

#00247F

Tritanopia (blue-blind)

#00374B

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #181381;
/* rgb */ color: rgb(24, 19, 129);
/* oklch */ color: oklch(30.0% 0.171 271.3);

Tailwind

colors: {
  custom: {
    50: '#6b54a7',
    500: '#181381',
    950: '#000000',
  },
}

SCSS

$custom: #181381;
$custom-light: #6b54a7;
$custom-dark: #000000;

JSON

{
  "hex": "#181381",
  "rgb": {
    "r": 24,
    "g": 19,
    "b": 129
  },
  "hsl": {
    "h": 242.727,
    "s": 74.324,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30004,
    "c": 0.17096,
    "h": 271.3
  },
  "luminance": 0.02245
}

Semantic roles & 50–950 ramp

primary

#181381

secondary

#B1B63A

accent

#F137E9

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080310

muted

#7B787F

Preview Lab

Preview with #181381

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →